US Bridges

CR 775N over Twelve Mile Creek

Fair

Cass County, Indiana · 00.40 E of CR 1050 E · Structure no. 0900035

Built
1987
38 years old
Condition
Fair
inspected June 2023
Type
Culvert
Steel
Length
21 ft
2 main spans
Daily traffic
110
2023 count
Owner
County
County Highway Agency

About this bridge

CR 775N over Twelve Mile Creek is a steel culvert carrying CR 775N over Twelve Mile Creek in Cass County, Indiana. It was built in 1987, so it is 38 years old, younger than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 110 vehicles a day, roughly 2% of them trucks, projected to reach 150 by 2043. The structure is 21 ft (6.5 m) long and 65 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCR 775N
CrossesTwelve Mile Creek
Location00.40 E of CR 1050 E
RouteCounty Highway 290
CountyCass County
StateIndiana
Coordinates40.87636, -86.17001
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.1 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length21 ft (6.5 m)
Longest span10 ft (3.1 m)
Deck width65 ft (19.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2023)
Projected traffic150 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 775N over Twelve Mile Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is CR 775N over Twelve Mile Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.

How much traffic does CR 775N over Twelve Mile Creek carry?

About 110 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is CR 775N over Twelve Mile Creek?

The structure is 21 ft (6.5 m) long with a longest span of 10 ft (3.1 m) and a deck 65 ft wide.

Who owns CR 775N over Twelve Mile Creek?

It is owned by the County Highway Agency.